Miley Cyrus to ring in 21 with MTV reins

By Breeanna Hare, CNN

updated 1:12 PM EST, Fri November 22, 2013

Miley Cyrus became a household name for families when her Disney Channel television show, "Hannah Montana," premiered in 2006. From there, Cyrus quickly rose to pop star fame and has been changing her appearance ever since.

The future pop star with her father, Billy Ray Cyrus, in October 1994 in Memphis, Tennessee.

The father and daughter team make a New York appearance for the Disney Channel in February 2006.

Cyrus performs during the Radio Disney Totally 10 Birthday Concert in July 2006 in Anaheim, California.

Cyrus chats with VJ Susie Castillo during an appearance on MTV's Total Request Live in February 2007 at MTV Studios in New York City.

Cyrus starred with Emily Osmand in an episode of "Hannah Montana" in June 2007.

Cyrus appears at the 2007 American Music Awards in Los Angeles.

The actress arrives at the Teen Vogue Young Hollywood Party at Vibiana in September 2007 in Los Angeles.

Cyrus arrives at a film premiere in Hollywood in January 2008.

Cyrus performs for ABC's "Good Morning America" at New York's Bryant Park in July 2008.

Cyrus appears at the Nickelodeon Kids' Choice Awards in Westwood, California, in 2009.

Cyrus performs during her "Wonder World" tour at Nassau Veterans Memorial Coliseum in November 2009 in Uniondale, New York.

Cyrus and her mother, Tish Cyrus, at the 52nd Annual Grammy Awards in January 2010 in Los Angeles.

Cyrus impersonates singer Justin Bieber in a Saturday Night Live skit with Vanessa Bayer in March 2011.

Cyrus performs at a music festival in June 2010 in Arganda del Rey, Spain.

Cyrus and Liam Hemsworth arrive at the 2012 People's Choice Awards at the Nokia Theatre L.A. Live in January 2012 in Los Angeles.

The singer arrives at the 2012 Billboard Music Awards in Las Vegas in May 2012.

Cyrus poses on the red carpet for the MTV Video Music Awards in Los Angeles in September 2012.

The grown-up Cyrus performs during the "VH1 Divas" concert in Los Angeles in December 2012.

Cyrus attends the Costume Institute Gala for the "PUNK: Chaos to Couture" exhibition at the Metropolitan Museum of Art on May 6 in New York City.

Cyrus winks during an interview at a radio station in Bad Vilbel near Frankfurt, Germany, on July 22.

Cyrus shows off her moves with Robin Thicke during the 2013 MTV Video Music Awards in Brooklyn, New York, on Sunday, August 25.

Cyrus is seen leaving her London hotel on September 11.

Cyrus performs onstage during the iHeart Radio Music Festival Village on September 21 in Las Vegas.

Taran Killam and Cyrus pose in a promo for her upcoming "Saturday Night Live" episode on October 5.

Bobby Moynihan, left to right, Vanessa Bayer and Cyrus perform a skit on "Saturday Night Live" on October 5, in which they mock Cyrus' VMA performance.

Cyrus smokes a marijuana joint onstage during the MTV Europe Music Awards in Amsterdam, Netherlands, on November 10.

Cyrus performs on the European competition show "The X Factor" in London on November 17.

Cyrus opens her Bangerz Tour on February 14, 2014 in Vancouver, Canada. The stage features a giant image of Cyrus' face with her signature exposed tongue serving as a slide.

Cyrus performs with false teeth during her Bangerz Tour at Rogers Arena on February 14, 2014 in Vancouver, Canada.

The network announced one of its favorite headline makers is going to run the flagship channel for eight hours, starting at noon ET Saturday.

The TV party will begin with "21 Candles: Miley's MTV Moments," an hourlong special highlighting "the 21 reasons why fans love the megastar, including Miley's best MTV moments of all time," the network said.

That hour will include snippets from the pop star's music videos and performances as well as comments from celebrities on their top Cyrus memories.

Afterward, the singer will re-air MTV's documentary about her, "Miley: The Movement Deluxe Edition," with new commentary and will also roll out episodes of her favorite MTV shows, "Snooki & JWoww" and "Awkward." Fans who Instagram or tweet birthday greetings using the hashtag #HappyBirthdayMiley could be included in the on-air festivities.